Foldable window sash



' 1929. w. NEUBECKER FOLDABLE WINDOW SASH Filed Oct. 19, 1927 2 Sheets-Sheet 1 Q 1929. w. NEUBECK-ER 9 F DABLE WINDOW SASH Filed Oct. 19, 1927 2 Sheds-Sheet 2 Patented Nov. 12, 1929 WILLIAM NEUBECKER, OF BUFFALO, NEW YORK FOLD'ABLE VVINDOW SAS H Application filed October 19, 1227-. Serial No. 227,223.

This invention relates generally to window sash construction but more particularly to a foldable sash.

Its chief object is the provision of a simple and inexpensive sash of this character which can be readily swung to a position convenient for cleaning the window panes and which will not interfere with the screens or storm sash enlarged transverse vertical section on line 22, Figure 1. Figure 3 is a fragmentary perspective view of the cooperating parts of the window sash. Figure 4 is an enlarged horizontal section on line 4-4, Figure 2.

Figure 5 is a similar section on line 55, Figure 1.

Similar characters of reference indicate corresponding parts throughout the several views.

Referring now to the drawings, 10 indicates a window frame of ordinary construction, 11 and 12 the upper and lower sash, respectively, and 13, 14: the upright side grooves in which the sash are guided.

The side rails or uprights of each sash are made sectional and consist of an inner section 15 forming a jointed or integral part of the sash-frame and an outer section 16 which is joined to but separate from the companion inner section in a manner to compel a simultaneous or unitary movement of such sections during the raising and lowering of the sash and to permit a laterally-swinging movement of the inner section relative to the outer section when it is desired to shift the sash to a position convenient for cleaning. The outer section 16 constitutes the guide rail of the sash, engaging the corresponding groove 13 or 1a in the window frame and being connected by a cord 17 with the usual weight 18. Secured to the inner upright face of each guide section 1 6 by screws 19 or other fasten ings is. a metallic plate 20, of brass or other appropriate material, extending from top. to bottom of the section and whose rear or outside marginal edge terminates in forwardly.- bent upright flange 21 forming a resulting groove 22'. Applied to the opposing upright face of the companion inner section 15is a similar plate 23 terminating at its front or inner edge in arearwardly-bent upright flange 2d producing a groove 25. Those upright edges of the plates 20, 23 which are unfianged are adapted to interlock with the companion grooves 22, 25 I in the 'manner shown in Figures 4 and 5. As shown clearly in Figure 3, those portions of the sections 15, 16 adjacent the unfianged edges of the plates are recessed, as indicated at 26, to readily receive the flanges 21, 24: thereof.

E'ach sash is fulcrumed at its lower end for vertically-swinging movement relative to its guide rails 16 and for this purpose the adjoining plates 20, 23 are pivotally'joined at their lower ends by pivot p'ins27, as seen in Figure 4. Fitted in a recess 28 near the upper endv of each of the sash-sections 15 is a laterally-swinging spring catch 29 which is adapted to interlock with: a corresponding opening 30 in the companion guide section 16 and thus reliably couplethe parts so that they move in unison when raising and lowering the sash. The spring catches project a suit-able distance from the face'of the sash to permit them to be manually released from looking engagement when it is desired to swing the sash into the room for cleaning purposes, as seen in the lower end of Figure 2. V v

I For the purpose of insuring a firm joint between the abutting faces of the metal plates 20, 23, they are preferably sprung into a slightly convex form in cross section, as shown in Figures 1 and 5. This construction enables the sash to be frictionally held at any desired position convenient for cleaning or for ventilating purposes and also serves to prevent rattling of the sash.

Aside from producing a weather-proof I joint between the sash and the guide rail sections 16, the hook-like flanges 21, 24. on the metal plates 20, 23 constitute stops for limit- 7 ing the outward-swinging movement of the sash beyond their proper verticalposition.

In order to retain the guide rails 16 in the frame-grooves 13, 14: and prevent them from accidently becoming displaced therefrom, as when the sash is swung inwardly, the upper ends of these rails are preferably provided on their inner faces with a laterally project, ing plate or tongue 81 engaging a vertical groove or guideway 32 which maybe formed, for example in the strips 33 defining the frame-grooves and opening into the latter. As shown in Figures 1 and 4, the guide rails 15 16 of the upper sash 11 are somewhat wider than the rails of the lowersash 12 so that. there is no danger of interference between these sash when they are swunginwardly. In the use of my invention, when'it is desired to swing, say, the lower sash to the position shown in the lower end of Figure 2, the same is first raised slightly and the catches 29 are released, after which the sash is grasped and 1 swung inwardly about its pivots 27 to a position convenient for cleaning. The operation of the upper sash is effected in the same man ner. In returning the sash. to 1 its original position, it is only necessary to swing the same outwardly, the spring-catches automati- 30 cally functioning to lock the sash in place relative to its. guide rails.

The construction of this improved sash is such that it can be applied to ordinary window frames and it lends itself very nicely for adaptation to existing sash without materially altering their construction. r

I claim as my invention The combination of a window frame having side grooves, guide rails slidable vertically in said grooves, a sash supported between the guide rails and capable of vertical movement therewith or of a swinging movement relative V thereto, face plates securedto the adjoining edges of the sashand its guide rails, said plates being of convex form in cross section to pro- 7 vide a yieldable frictional grip between the sash and the guide rails, pivot pins applied to said plates for hingedly' connecting said sash to said guide rails and complementary means on the face plates for limiting the swinging movement of the sash in one direc tion.

V 7 WILLIAM NEUBECKER. 

